When browsing the source code of Guava, I came across the following piece of code (part of the implementation of hashCode for the inner class CartesianSet): int adjust = size() – 1; for (int i = 0; i < axes.size(); i++) { adjust *= 31; adjust = ~~adjust; // in GWT, we have to deal … Read more
I always thought that && operator in Java is used for verifying whether both its boolean operands are true, and the & operator is used to do Bit-wise operations on two integer types. Recently I came to know that & operator can also be used verify whether both its boolean operands are true, the only … Read more
I’m trying to convert an integer to binary using the bin() function in Python. However, it always removes the leading zeros, which I actually need, such that the result is always 8-bit: Example: bin(1) -> 0b1 # What I would like: bin(1) -> 0b00000001 Is there a way of doing this? 10 Answers 10
Why is it that ~2 is equal to -3? How does ~ operator work? 18 Answers 18
I’m just wondering why we usually use logical OR || between two booleans not bitwise OR |, though they are both working well. I mean, look at the following: if(true | true) // pass if(true | false) // pass if(false | true) // pass if(false | false) // no pass if(true || true) // pass … Read more
I am fairly new to C programming, and I encountered bit masking. Can someone explain to me the general concept and function of bit masking? Examples are much appreciated. 2 Answers 2
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago. Improve this question What are some real world use cases of the following bitwise operators? AND XOR NOT … Read more
How do you set, clear, and toggle a bit? 2 27 Setting a bit Use the bitwise OR operator (|) to set a bit. number |= 1UL << n; That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if … Read more
